Got 5 Minutes? Make Ice Cream In A Plastic Baggy
It's hot here in Brooklyn and we could really go for some ice cream... if only we could make some in 5 minutes using 2 ziplock baggies and this carton of half and half... oh wait. We can! From BoingBoing:
Here's a pretty damned simple ice-cream recipe: combine ingredients in a baggie. Fill a bigger baggie with ice, salt and the baggie of ingredients. Shake for five minutes. Ice cream. Who knew?You can also put the ingredient bag in a coffee can full of ice and salt and tell children to kick it. Children love to kick things. —MEGHANN MARCO1. Fill the large bag half full of ice, and add the rock salt. Seal the bag.
2. Put milk, vanilla, and sugar into the small bag, and seal it.
3. Place the small bag inside the large one and seal again carefully.
4. Shake until mixture is ice cream, about 5 minutes.
5. Wipe off top of small bag, then open carefully and enjoy!
Ice Cream in a Bag [via BoingBoing]
(Photo: emily bean)
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Comments:
the quicker you freeze the smoother the crystals, maximize ice and salt, plain old table salt will do just as fine, remember kids freezing point depression is a simple phenomenon and it is dependent on the number if ions, or molecules, present in suspension to keep the water from crystallizing, and not the identity of the compound. So dump in as much salt as you and get and watch how cold it will get.
o yea you will need to deep freeze for a few hours to get decent quality as well.
@Rectilinear Propagation: When I was in 1st grade my teacher brought in a jar filled partway with heavy cream, and a box of saltine crackers. She had us sit in a circle, and she told stories while we passed the jar around, each taking turns shaking it. After a few rounds, the jar was filled with butter, which we got to eat on the crackers. It was one of the best things I ever did in school, bar none. I still know that teacher, and she still does that lesson.






Who knew?
Science teachers trying to pass off an ice cream party as a demonstration on changing the temperature at which something freezes.